Crane attachment for tractors



Dec. 17, 1929. J, B, BARNETT 1,739,938

CRANE ATTACHMENT FOR TRAGTORS Filed July 2l. 1928 2 Sheets-Sheet lDec.'l7, 1929. J. B. BARNETT CRANE ATTACHMENT FOR TRAGTORS 2Sheets-Sheet Filed July4 2l, 1928 Patented Dec. 17, 1929 UTE JOHN B;BARNETT, oriioLnInAY, TEXAS nppiieatio inea July 21, ieaa seriai110,294,470.;

rThis invention relates to a crane attachment tor tractors, and has moreparticular reference to means associated with a winch attachment forvtractors to provide a crane, tor enabling use of the tractor in liftingVand.

transporting heavy objects or articles. v

The primary object ot the inventionis to provide a simple means'iorreadily converting a Winch attachment tor tractors into an efcientcrane. f A further object is to provide a device ot the above kindincluding a boom Which is simplel and durable in construction and lightin Weight, and efficient means to mount the rbooin on 'the-front ot theWinch attachment trame in position to cooperate With the Winding drum otthe Winch.

Other object sWill'appear as the nature ot the invention is betterunderstood, andthe 2o same consists in the novel form, combination andarrangement ot parts hereinatter'vmore `fully described, shown inv theaccompanying' drawings vand claimed.

In the drawings:

and partly iii section, of a tractor .equipped with a crane attachmentembodying the present invention. Y t

Figure 2 isa front elevational Avievv thereof.

Figure ,3 is an enlarged fragmentary vertical section ot the boom andadjacent parts, takenv on line 3 3 ot Figure l'.V

Figure 4 isan eniarged fragmentary perspective vview ot an end of one ofthe side trame members ot the Winch and the attached iiioiiiitingbracketfor the boom of the crane; and 1 Figure 5 is an Venlarged fragmentaryVsec-- tion on line'- ot Figure l.

40 Referring more in detail to the drawings',

5 indicates a conventional'torm'ot tractor having 'a Winch mountedthereon, Which may be of any Well known or preferred construcf tion',and whichV embodies side trame members 6 disposedatopposite sidesot thetractor and projecting forwardlyv beyond. th'e front end ot the latter,the rear ends or" the trame members. 6 being fastened tothe'rear. axlehousingo't the tractor as at 7, and thevind- Figure 1 is a vievv,rpartlyin side elevation Y y 'movement iii-the Vusual Way.

ing drum. 8 ot the -Winch being mounted onl the projecting ends of thetramemember's 6 as shown. 11i the embodiment illustrated," thev drum 8is operatively connectedto the j laterally projectingipovver-take-ofishaft; 9

ot thel tractorby means including sprocket gearii'ig 10,1Whereby thedrum 8 may beV opy erated by the engine ofthe tractorindependentiy otthe travel of the latter,= tlie-u'sual clutch'and. brake means, not,shoWn,`.bein`g-fl provided toi-Icontrolling transmission of l powertotheydrumandl for holding the lat-V ter from turningl ivhe'njidle. Thefront aXle' vr llvis also shown as settorvvardly` of its noi",- malposition bygextension mounting elements l'and l18, thereby lengtheningthe 4Wheel: 65,

base ot' lthe Vtractor to preventany tendency o 'fr' the tractor" tooverturnand adaptfthe same to ettiectively-take any severe strainsinvolved when subjectingthe Winch to heavy duty". i

As show-n, the element-13 consist-,ot a 'sup portingyoke having itsupper endsv fixedtofl the projectingftrontendsot the tramevniemf bersy6V directly "below i the bearings- Afor the Ashaft ot drum 8, the-tront axlellbeing piv-V oted as at Ylli toftliejyoke 13orlateraltiltiiig `viltn accordance with the present invention,

an upright boom is mountedion the front l ready transportation'todesired point. when i the tractor ispropelled to ,suchfp'oint n Asshown, theboomconsists o'fja vpair/of spaced':tubiilar or pipe members17 provided. eo,- Y I jat their lovver ends with T-,tittingsiyl which' Yare transversely-lalined andV connected;ib'yV a pai'rfot. pipesectionsl1.91 and .an'intermediate \'T-titting 2() which may beloosely,`threadedv together tolpermit vforwardly swinging movev ment ot the boommembers 17'to adjust the i'nl f clination ot the'latter.v llievboomisinclined v forwardly',andv sustained at the desired in;A clinationbymeansot guy cables 2l attached to the upper ends of the boom memberslfand 'le'Y f .i S5" l .object or article clear ot thefground, tor

p i y 1,739,938

adjustably clamped to the` frame members V6 ory other suitable partsnear the rear end of the tractor` Thebranchcof the fitting` 2O isdirected downwardly and has the upper end of an inclined brace armA 22threaded p therein, said brace arm being in the formofA a pipe sectionhav-ing a flattened and slotted loWer'e-nd23 detachably bolted -to thelower portion of the axle-supporting yoke 13. In

this way thel arm 22 assists in sustaining the f load placed on the boomwhen the heavy ob-v 'sist fof 1a `pipe v'section removably inserted yject is lifted by the hoistiI-ig-cablel5.A v Y The upper ends of theboom members 17 are directed laterally toward and adjacent Y each otherwhere they have parallel flattened Y ltermiI-ials 24 between which theysheave-l is journaled.V f

FiXed'lto and projecting forwardly from their-entends oftheframem'emfbers @are isuppontingbrac'lets 25 hav-ing tizmsverselyV alinedopenings 26. in which :are lengaged and suitablyv retained .-the' endsofa transverse horizontal 4supp'ort'ing.rod27 which may con through thetransverse j connecting member ,embodying the T vfittings l8jand 20yandpipe Y Asections -19L-f The"=} '00m is', thus -readily and VYsoYeiectively Vdetach'ablyl mounted vat its lower end in position infrontof the drunif-S.

Thus lit Wi-lltber'seen that'when -a tractor is "equippedwith lawinchsuch Winch may-be readily converted into leilicientcraneby Athefdevicecoirtemplatedby Athis invention.

cui() .Minori-changes may be made without-de partingtrorn 'the spiritandiscope of the i-nvention as claimed. f

WhatiI claim'aslnew is.: Y f Means for. converting winch attachment lfortractors `for use as 'a crane5 whereini said winch attachmentscomprising side frame members having awinding dlrummounted between ltheforward .ends thereof, vcomprising i f brackets ladaptedtoibe fixed to`theyforward Vends of saidi fra-me members, 'a cranefboo'm adaptedtobe-gmou'ntedra't itsflower-'end in said i V-braoketsand: having a`hoisting `cable guide sheavejournaledy at the' upper end thereof,saidboom emb'ojdyin g1 a i pair of sp aced similar members offsetlaterally. toward each other at'theiriupp'er ends-andi having the `guideY Y j sheave Ajournaled therebetw'een,.- a ltubular open-ended 4 rigidkconnection.I .between `-`the ylower ends o 'said boomlm'embers, Aand asup-y f porting shaft-extending through said 'connecn tion and havingVits iendsf pr0jecting=laterally therefrom;

ln; testimony.. whereof-i I affix my signa ture; i

Y JOHN BIBARNETT,

